An action to determine the validity of bonds or indebtedness, authorized for the acquisition, construction, or completion of any public utility or public utility works, may be brought pursuant to Chapter 9 (commencing with Section 860) of Title 10 of Part 2 of the Code of Civil Procedure. For such purpose an indebtedness shall be deemed to be in existence upon its authorization.
Ca. Pub. Util. Code § 17101